I agree..it's rude to get drunk, even "plaster" at someone's home or event. This may work if one is still in college and attending a college party, but there comes a time, when after 25 and particularly if you're 1. working in a "real" job, 2. have a family, that it's time to leave the adolescent behaviour behind and start acting like an adult.
It's not as if one is back in high school or in college where it's "cute", and if there is felt a need to behave like this, this is an indication of an addiction problem.
At a certain age, it would be felt that an individual would be self conscious and considerate of themselves and being in other's prescence.
Though we may live in a modern age, the old adage about how other's will perceive others by their actions still hold. This is not only unfair to the hosts to come to their home and become drunk, but to other guests who may or may not know that individual and to the host's home..